Generates an iOS Impulse, or Stem chart in code.

The SCIFastImpulseRenderableSeries requires a SCIXyDataSeries, which contains X-Y point data.

Impulse series can be used to visualize Digital Filter responses, or scientific charts, for instance, mass spectra. You can add optional data-point markers to a impulse series using the PointMarker API. This is very performant and uses the same fast Hardware-accelerated rendering as our Scatter-Charts.

// SCIImpulseChartView.m

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// ImpulseChartView.m is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
//
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied.
//******************************************************************************

#import "ImpulseChartView.h"
#import "SCDDataManager.h"

@implementation ImpulseChartView

- (Class)associatedType { return SCIChartSurface.class; }

- (void)initExample {
    id<ISCIAxis> xAxis = [SCINumericAxis new];
    xAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    
    id<ISCIAxis> yAxis = [SCINumericAxis new];
    yAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
    
    SCDDoubleSeries *ds1Points = [SCDDataManager getDampedSinewaveWithAmplitude:1.0 DampingFactor:0.05 PointCount:50 Freq:5];
    SCIXyDataSeries *dataSeries = [[SCIXyDataSeries alloc] initWithXType:SCIDataType_Double yType:SCIDataType_Double];
    [dataSeries appendValuesX:ds1Points.xValues y:ds1Points.yValues];
    
    SCIEllipsePointMarker *ellipsePointMarker = [SCIEllipsePointMarker new];
    ellipsePointMarker.strokeStyle = SCIPenStyle.TRANSPARENT;
    ellipsePointMarker.fillStyle = [[SCISolidBrushStyle alloc] initWithColorCode:0xFF0066FF];
    ellipsePointMarker.size = CGSizeMake(10, 10);
    
    SCIFastImpulseRenderableSeries *rSeries = [SCIFastImpulseRenderableSeries new];
    rSeries.dataSeries = dataSeries;
    rSeries.pointMarker = ellipsePointMarker;
    rSeries.strokeStyle = [[SCISolidPenStyle alloc] initWithColorCode:0xFF0066FF thickness:1.0];
    
    [SCIUpdateSuspender usingWithSuspendable:self.surface withBlock:^{
        [self.surface.xAxes add:xAxis];
        [self.surface.yAxes add:yAxis];
        [self.surface.renderableSeries add:rSeries];
        [self.surface.chartModifiers add:[SCDExampleBaseViewController createDefaultModifiers]];

        [SCIAnimations waveSeries:rSeries duration:3.0 andEasingFunction:[SCICubicEase new]];
    }];
}

@end

// ImpulseChartView.swift

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// ImpulseChartView.swift is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
//
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied.
//******************************************************************************

class ImpulseChartView: SCDSingleChartViewController<SCIChartSurface> {
    
    override var associatedType: AnyClass { return SCIChartSurface.self }
    
    override func initExample() {
        let xAxis = SCINumericAxis()
        xAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        
        let yAxis = SCINumericAxis()
        yAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
        
        let ds1points = SCDDataManager.getDampedSinewave(withAmplitude: 1.0, dampingFactor: 0.05, pointCount: 50, freq: 5)
        let dataSeries = SCIXyDataSeries(xType: .double, yType: .double)
        dataSeries.append(x: ds1points.xValues, y: ds1points.yValues)
        
        let ellipsePointMarker = SCIEllipsePointMarker()
        ellipsePointMarker.strokeStyle = SCIPenStyle.transparent
        ellipsePointMarker.fillStyle = SCISolidBrushStyle(color: 0xFF0066FF)
        ellipsePointMarker.size = CGSize(width: 10, height: 10)
        
        let rSeries = SCIFastImpulseRenderableSeries()
        rSeries.dataSeries = dataSeries
        rSeries.pointMarker = ellipsePointMarker
        rSeries.strokeStyle = SCISolidPenStyle(color: 0xFF0066FF, thickness: 1.0)
        
        SCIUpdateSuspender.usingWith(surface) {
            self.surface.xAxes.add(xAxis)
            self.surface.yAxes.add(yAxis)
            self.surface.renderableSeries.add(rSeries)
            self.surface.chartModifiers.add(SCDExampleBaseViewController.createDefaultModifiers())
            
            SCIAnimations.wave(rSeries, duration: 3.0, andEasingFunction: SCICubicEase())
        }
    }
}

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